Double Arch Double Arch Choose raster pattern 1. Two vertical lines of hairs, pattern widening toward the anal slit. 2. Doglegged line or arc of parallel hairs. 3. Two parallel lines of hairs, converging at both ends. 4. No distinctive pattern of hairs. Results: Asiatic garden beetle (Maladera castanea) Black turfgrass ataenius (Ataenius spretulus) European chafer (Amphimallon majale) May or June beetles (Phyllophaga spp)
